UTG Super Slim RDM20 Mount for Rear Sight Dovetail

thin. sturdy. bolted down firmly in place and didnt budge after 4 mags of .40 at a decent cadence. very happy so far. if it stays in place and doesnt fail, it will prove to be an excellent investment. after other brands with the hole on the upper plate continued to fail even with loctite, this was a last attempt to avoid machining the slide. so far it looks like it'll work well. i'd recommend it.

As advertised, review application

This was purchased for a Glock 19 Gen 4, to mount the inexpensive UTG red dot sight. The Glock rear sight is removed, an insert installed into the dovetail slot, and the sight mounting base attached to the insert with two screws. This seems to be a solid platform, and my sight appears to be quite secure when mounted. A slight collar around each hole in the dovetail provides good indexing of the sight base. Mounting screws come with a bit of blue thread locker applied. The potential installation issue is that the insert is extremely tight in the dovetail slot - not much chance that the mount will drift sideways with use. This is similar to, or perhaps tighter than, a replacement sight. Fortunately I already had a sight pusher tool; I would not have been able to tap this insert into place with a mallet and drift punch. An alternative would be to file a bit off the insert, but it is small and may be difficult to work with. The "Ade Advanced Optics Glock Tactical Mini Dotx Sight Pistol Mount Base" (also sold on Amazon) may be a better option for those without sight pushers. My ADE dovetail insert for another Glock pistol fit loosely enough to be easily inserted by hand. The mounting base is slightly curved on the sides, conforming to a stock Glock slide to both capture the insert and to be self-centering. The base mounting screws tighten up the assembly and hold it in place. The UTG mount fits the ADE sight, and the ADE mount accommodates the UTG sight. This seems to be a somewhat "standard" pattern used by Burris, Docter, Vortex, and others. This type of mount can be very good for those who want to experiment with inexpensive red dots before buying higher-end sights and milled slides, though the sight will sit noticeably higher without slide milling. The UTG has been a high quality mount so far.

Fits well on a Smith & Wesson M&P .22 paired with a Leapers utg red dot.

This is not compatible with the Vortex Venom. Returning and going to go to a gun store to make sure I get something that works this time. Amazon AI is worthless.

Easy mount, but wouldn’t hold zero with my 10mm. Probably work ok with 9mm, on my lighter loads, similar to .40 S&W it did fine, but full power 10mm wouldn’t hold zero. These are tack driver loads, and I tested them during the same range session with iron sights, so it is for sure the mount.

This mount is legit. I have it on my Sig P226, I have put just shy of 1000 rounds through it with this mount on and it hasn't loosened not one bit. I had first bought the Ade optics dovetail mount because of the price and to try out a red dot optic. You definitely get what you pay for. That mount kept getting loose after about 50 rounds or so. After that experience I had almost given up on thinking these things would work, until I convinced myself to give it another shot with this UTG. I'm glad I did. I highly recommend this product, no need to spend the money and the time it takes to get your slide milled to have a red dot on your pistol, when you can just get this mount.

The fit and finish are top notch. It's a solid plate mount that's fits flush with the optic. The installation was very simple and was installed in a few mintues. I highly recommend this for mount for optic that are compatible with it.

I can confirm the UTG Super Slim RDM20 mount does fit a Gen 5 Glock 17 and a Vortex Venom. A sight press is highly recommended as it is a tight fit.

Did not hold my scope on my gun

Looks good but I have not tried it on my firearm

Mounted UTG 4moa micro red dot on my G17 with this mount and it works awesome. Easy to install.

Fits great on my gen 2 17. For the price I 'm real happy with it.